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学科主题: 金属有机化学
题名: Witting-type olefination catalyzed by PEG-telluride
其他题名: PEG器载的碲化物的Witting型烯基化反应
作者: Huang ZZ(黄峥峥) ; Ye S(叶松) ; Xia W(夏薇) ; Yu YH(余亦华) ; Tang Y(唐勇)
通讯作者: 唐勇
刊名: J. Org. Chem.
发表日期: 2002-01-01
卷: 67, 期:9, 页:3096-3103
收录类别: SCI
部门归属: 中国科学院上海有机化学研究所金属有机化学开放实验室
英文摘要: Soluble poly(ethylene glycol)(PEG)-supported telluride 2 was designed and synthesized for catalytic Wittig-type reactions. It was found that the catalytic loading could be reduced from 20 to 2 mol% by the introduction of PEG(even to 0.5 mol% when some telluride salts wee used as the catalyst). Under the catalytic reaction conditions, a wide variety of aldehydes with different structures could react with bromoacetate to afford β-substitutited or α,β-disubstituted unsaturated esters in high yields with excellent E-stereoselectivity. The modified process, by using sodium bisulfite instead of triphenyl phosphite, represented a very simple product isolation procedure. The roles of PEG for promoting the ylide formation and stabilizing the catalytic species were disclosed. The mechanism was also studied.
语种: 英语
相关网址: 查看原文
内容类型: 期刊论文
URI标识: http://ir.sioc.ac.cn/handle/331003/19261
Appears in Collections:金属有机化学国家重点实验室_期刊论文

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Recommended Citation:
Huang ZZ,Ye S,Xia W,et al. Witting-type olefination catalyzed by PEG-telluride[J]. J. Org. Chem.,2002,67(9):3096-3103.
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